To wilson w



(No Model.)

0. E. GEE.

SELF LUBRIGATING BEARING.

Patented Dec. 2, 1884.

|| I 1 will! I! WTIlE/ZES 76 MW My UNITED. STATES PATENT OFFICE.

CHARLES E. GEE, OF LOWELL, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO WILSON W. CAREY, OF SAME PLACE.

SELF-LUBRICATING} BEARING.

SPECIFICATION forming part of Letters Patent No. 308,838, dated December 2, 1884.

Application filed April 28, 1884. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES E. GEE, a citizen of the United States, residing'at Lowell, in the county of Middlesex and State of Mas sachusetts, have invented certain new and useful Improvements in Self-Lubricating Bearings; and I do hereby declare that the same are fully described in the following specification and illustrated in the accompanying drawings.

This invention relates to improvements in self-lubricating bearings particularly designed for hubs for loose pulleys, although'the invention is equally well adapted, with a slight modification, for stationary bearings.

The invention is carried out as follows, ref erence being had to the accompanying drawings, where- Figure 1 represents an end View of the improved bearing,- showing its end cap as being removed. Fig. 2 represents a central longitudinal section. Fig. 3 represents a crosssection on the line A 13 shown in Fig. 2, and Fig. '4 represents a cross-section of the adjustable feed-screw on the line 0 D shown in Fig. 3.

Similar letters refer to similar parts'wherever they occur on the different parts of the drawings.

a is the hollow hub, and a a are the arms of the pulley, cast in one piece with said 1101- low hub, as shown. In one piece with the hollow huba is cast the bearing-sleeve, a", adapted to run loosely on the shaft 00, as seen in Fig. 2, and between the outer and inner shells, at and a, is left the annular oil-chamber 11, adapted to contain the lubricant.

f is aremovable screw-plug screwed through a corresponding perforation in shell a, through which perforation the chamber 2) is filled with the lubricant, after which the plug f is screwed into said perforation to prevent the escape of the lubricant at this place.

The chamber 1) is closedin one end by means of the wall (0*, cast in one piece with shells a a, as shown in Fig. 2; but in its other end it is left open to permit the core used in cast ing the improved bearing to be removed, the said shells a a being only connected by means of two or more braces, a a cast in one piece with said shells, as shown in Figs. 1 and 2. The said open end of the bearing is closed by means of the annularringc, secured by means of screws 0 to the braces 11 a or, if so desired, the ring a may be made in the form of a nut and screwed onto the projecting end of sleeve a without departing from the essence of my invention.

- Centrally below the screw-plug f is located the adjustable feed-screw e, that is screwed through a corresponding screw-threaded perforation in the bearingsleeve a, as shown in Figs. 2 and 3, and said screw 6 has a transverse slot, 6, in its upper end, by means of which and an ordinary screw-driver said feedscrew 6 can be turned around in its bearing in sleeve a, so as to regulate the amount of oil to be automatically fed from chamber b to the axle m. The feed-screw 6 has a vertical slot, or, if so desired, a central longitudinal perforation, in which is placed a wick or porous absorbent, 6, (shown in Figs. 2, 3, and 4,)

through which the oil is slowly permitted to pass from chamber 12 to the longitudinal wick or absorbent d, that is laid ina longitudinal groove or recess on the inside of sleeve a, as shown in Figs. 2 and 3, which wick (2 lies in contact with the axle a: and transfers the oil to its surface as the pulley rotates. By screwing the feed-screw 6 down upon the wick d the latter, as well as wick e, is correspondingly compressed and the oil-feed to the shaft proportionately reduced, and vice versa, according to the amount of lubrication desired and the nature of the lubricant that is used.

a a are ordinary oil-holes through the solid portions a" and a of the hub, through which the axle a: may be lubricated in the usual manner, if so desired; but such oil-holes are not essential and may be dispensed with.

By the construction of this my improved self-lubricating bearing, as shown and described, I produce a very strong, durable, and simple automatic lubricating device, that is easily filled by the lubricant, and by means of the slotted or perforated feed-screw 6, its wicking 6, and longitudinal wieking d on the grooved inside of sleeve a thefeed of the oil can be regulated and adjusted with great nicety.

Having thus fully described the nature, eonstruetion, and operation of my invention, I wish to secure by Letters Patent and elain1 The improved self-lubricating bearing cast in one single piece and composed of outer shell, a, and bearingsleeve a", with annular oil-chamber 7) between them, combined with screw-plug f, the adjustable feed-screw c,with its Wiek e, and the longitudinal Wick d in the grooved sleeve to, and cap or nut c, as and for 10 the purpose set forth.

In testimony whereof I have affixed my signature in presence of two Witnesses.

CHARLES E. GEE.

Witnesses:

O. G. HU'ronINsoN, XVM. F. HILLs. 

